Concrete Storage Facility

Abstract

A pre-stressed concrete storage apparatus includes a plurality of panels secured together to form a hollow interior space for storing items. An outer door panel is selectively moveable for restricting access to the interior of the apparatus. A secondary metal door and cage assembly is located behind the primary outer door panel for further restricting access to the interior of the storage apparatus. A pulley system is provided for mechanically lifting and lowering the outer door panel.

What is claimed is: 
     
         1 . A concrete storage facility comprising:
 a first pre-stressed concrete side panel having a first upright edge and a first panel flange extending substantially perpendicularly from the first upright edge of the first side panel;   a second pre-stressed concrete side panel positioned opposite the first pre-stressed concrete side panel, the second side panel having a second upright edge and a second panel flange extending from the second upright edge, the second panel flange extending toward the first panel flange;   a first angle bracket on the first side panel, the first angle bracket including a first bracket flange protruding from the first angle bracket substantially parallel to the first panel flange;   a first flange gap between the first bracket flange and the first panel flange;   a second angle bracket on the second side panel, the second angle bracket including a second bracket flange protruding from the second angle bracket substantially parallel to the second panel flange;   a second flange gap between the second bracket flange and the second panel flange; and   a pre-stressed concrete door having a first upright door edge slidably disposed in the first flange gap and a second upright door edge slidably disposed in the second flange gap.   
     
     
         2 . The apparatus of  claim 1 , wherein the first panel flange comprises concrete. 
     
     
         3 . The apparatus of  claim 2 , wherein the first panel flange is integrally formed on the first side panel. 
     
     
         4 . The apparatus of  claim 3 , wherein the second panel flange comprises concrete. 
     
     
         5 . The apparatus of  claim 4 , wherein the second panel flange is integrally formed on the second side panel.